9303753286127016 A cylindrical copper rod is reformed to thrice its original length. Resistance between its ends before the change was r, now its new resistance becomes

A cylindrical copper rod is reformed to thrice its original length. Resistance between its ends before the change was r, now its new resistance becomes

byBalkishan Agrawal -
0

 A cylindrical copper rod is reformed to twice its original length. The resistance between its ends before the change was r, now its new resistance becomes

(a) 8R
(b) 4R
(c) 2R
(d) R

Answer: (b) 4R

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Balkishan Agrawal

At the helm of GMS Learning is Principal Balkishan Agrawal, a dedicated and experienced educationist. Under his able guidance, our school has flourished academically and has achieved remarkable milestones in various fields. Principal Agrawal’s vision for the school is centered on providing a nurturing environment where every student can thrive, learn, and grow.

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